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Publication numberUS5230025 A
Publication typeGrant
Application numberUS 07/575,796
Publication dateJul 20, 1993
Filing dateAug 31, 1990
Priority dateAug 31, 1990
Fee statusLapsed
Also published asCA2090484A1, EP0547173A1, EP0547173A4, WO1992004689A1
Publication number07575796, 575796, US 5230025 A, US 5230025A, US-A-5230025, US5230025 A, US5230025A
InventorsBrian H. Fishbine, Glenn M. Fishbine, Theodore D. Klein, Daniel E. Germann, Mark Ransom
Original AssigneeDigital Biometrics, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and apparatus for capturing skin print images
US 5230025 A
Abstract
A system for generating data characteristic of a rolled skinprint in real time. A body part such as a finger contacts a receiving surface of an optical device. The receiving surface is imaged and recorded on an image recording medium during the period of contact. The resulting record is then used to generate digital data representative of the image of the skinprint. This is especially useful for recording a rolled fingerprint image taken on a flat receiving surface.
Images(6)
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Claims(15)
What is claimed is:
1. An identification image recording apparatus, comprising:
prism means for propagating light corresponding to raised surfaces of a portion of a human body in contact with the prism means, wherein the prism means comprises a light source and a prism, the prism having a receiving surface and a light propagating surface, wherein the receiving surface has reflective properties which change as a function of contact with the human body portion and wherein the light propagating surface propagates light reflected from the receiving surface, the prism and the light source being configured so that propagated light corresponding to areas of the receiving surface in contact with the raised surfaces is higher in intensity than propagated light corresponding to other areas of the receiving surface;
image recording means positioned to continuously receive the propagated light, wherein the image recording means comprises an image recording medium for accumulating the light over a period of time corresponding to a complete finger roll to form a skin print image;
conversion means for converting said skin print image into electrical signals; and
image processing means connected to said image recording means for receiving said electrical signals.
2. The apparatus according to claim 1 wherein the image recording medium comprises a CCD array positioned to continuously receive said propagated light.
3. The apparatus according to claim 2 wherein the conversion means includes means for reading the CCD array.
4. The apparatus according to claim 1 wherein the conversion means includes means for storing the skin print image in memory.
5. The apparatus according to claim 1 wherein the image recording medium comprises an electrophotographic recording system.
6. The apparatus according to claim 1 wherein said prism means further comprises monochromatic filters positioned between the image recording means and the propagating surface of the prism.
7. A method of generating data characteristic of a rolled fingerprint image, wherein the method comprises the steps of:
providing an optical device having a finger receiving surface which reflects light as a function of a ridge and valley pattern of a finger brought in contact with the finger receiving surface, a light propagating surface which propagates light reflected from the finger receiving surface and a source of illumination positioned to project light onto the receiving surface;
providing an image recording medium positioned to receive the propagated light;
placing a finger on the finger receiving surface of the optical device;
rolling the finger across the finger receiving surface, wherein the step of rolling occurs over a period of time;
continuously recording the rolled fingerprint image as the finger contacts the finger receiving surface, wherein the step of recording comprises accumulating on said image recording medium, during the period of time the finger is being rolled across the receiving surface, a fingerprint image which varies as a function of intensity of the propagated light over the period of time;
converting the fingerprint image into digital signals; and
generating an array of digital data characteristic of a complete rolled fingerprint image from the digital signals.
8. The method according to claim 7 wherein the step of generating the array includes generating the array in real time as the finger is being rolled.
9. The method according to claim 8 wherein the step of converting the fingerprint image includes determining a threshold value for the digital data to determine presence or absence of contact of the finger with the receiving surface.
10. The method according to claim 7 further including the steps of:
detecting that the finger is on the finger receiving surface; and
terminating the step of accumulating if the finger is not in contact with the finger receiving surface.
11. The method according to claim 10 further including the step of activating an alarm if the finger is not detected within a preselected amount of time from the start of image recording.
12. A method of capturing a skin print image, wherein the method comprises the steps of:
providing an optical device having a receiving surface which reflects light as a function of a ridge and valley pattern in skin brought in contact with the receiving surface, a light propagating surface which propagates light reflected from the receiving surface and a source of illumination positioned to project light onto the receiving surface;
providing an image recording medium positioned to receive the propagated light;
placing a portion of a human body in contact with the receiving surface;
reflecting light projected from the illumination source off the receiving surface;
propagating the reflected light through the propagating surface;
accumulating a first image as a function of intensity of the propagated light over a first period of time;
accumulating a second image as a function of intensity of the propagated light over a second, nonoverlapping, period of time; and
combining the first and second images to form the skin print image.
13. The method according to claim 12 wherein the step of combining comprises the steps of:
digitizing the first and second images to form first and second arrays of pixels, respectively, wherein each pixel has an intensity value;
adding the pixel intensity values of the first and second pixels arrays to produce a third pixel array; and
storing the third pixel array as the skin print image.
14. A method of generating data characteristic of a rolled fingerprint image, wherein the method comprises the steps of:
providing an optical device having a finger receiving surface which reflects light as a function of a ridge and valley pattern of a finger brought in contact with the finger receiving surface, a light propagating surface which propagates light reflected from the finger receiving surface and a source of illumination positioned to project light onto the receiving surface;
providing an image recording medium positioned to receive the propagated light;
placing a finger on the finger receiving surface of the optical device;
rolling the finger across the finger receiving surface, wherein the step of rolling occurs over a period of time;
continuously recording the rolled fingerprint image as the finger contacts the finger receiving surface, wherein the step of recording comprises accumulating on said image recording medium, during the period of time the finger is being rolled across the receiving surface, a rolled fingerprint image which varies as a function of intensity of the propagated light over the period of time.
15. The method according to claim 14 wherein the step of recording further comprises the steps of:
converting the fingerprint image into digital signals; and
generating an array of digital data characteristic of the rolled fingerprint image from the digital signals.
Description
BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to computer processing of optical skin pattern images to produce rolled skin pattern images, especially fingerprint images.

2. Description of Background Material

Over the years, the most commonly used technique for obtaining "rolled" fingerprints has been to apply ink to the tip of individual fingers and roll the inked fingertips at an appropriate location on an applicant card. While these inking procedures will usually provide satisfactory images, they have their drawbacks. The inking procedure is messy. Several attempts are often required in order to obtain an acceptable fingerprint. Perhaps even a bigger drawback of this systems is that the printed images are not easily adaptable to computerized storage and processing techniques, inhibiting cooperation and fingerprint data transfer between various police agencies.

Systems which optically or optically and mechanically generate fingerprint images are also in use. Several such fingerprinting systems are disclosed in Fishbine et al. U.S Pat. No. 4,933,976, Ruell German Pat. No. 3423886 Al, Becker U.S. Pat. No. 3,482,498, McMahon U.S. Pat. No. 3,975,711, Schiller U.S. Pat. Nos. 4,544,267 and 4,322,163, and Marcus U.S. Pat. No. 4,553,837.

Due to the compound curved nature of the fingerprint on a finger, it is difficult to optically obtain an image of the fingerprint, especially an image corresponding to a rolled fingerprint. Fishbine et al. discloses a method based on building a composite image from a plurality of arrays of slice data characteristic of adjacent and overlapping two-dimensional slices of the fingerprint image.

The other references rely on complex mechanical movement of the fingerprint receiving optics. The Ruell patent discloses a fingerprinting system in which a camera images a finger rolled across a contact plate. Contact sensors on the edge of the plate provide information representative of which portion of the contact plate the finger overlies. The result is a plurality of adjacent but not overlapping two-dimensional slices that are pieced together to form the fingerprint image.

The Schiller patents disclose an apparatus in which a finger pressed against a platen provides a fingerprint object which is scanned by an interrogating beam of collimated light. The beam is linearly displaced across the platen thereby maintaining a constant angle between the interrogating light beam and the plane of the object being scanned. The Marcus U.S. Pat. No. 4,553,837 discloses a finger processing apparatus which includes a cylindrical-segment platen which supports a finger. Optical scanning equipment scans the circumference of the platen in such a manner that the angle of incidence of a light beam on the fingerprint object remains constant. The Becker U.S. Pat. No. 3,482,498 discloses several embodiments of an optical apparatus for producing a rolled fingerprint image. The embodiment shown in FIG. 1A utilizes a plurality of prisms and light sources, and produces only an approximation of the ball and side ridges. The embodiment shown in FIGS. 2 and 3 utilize a mechanical system actuated by a rolling finger to move and position a light source.

While the fingerprinting systems disclosed in the Ruell patent, the Marcus patent and the Becker patent may be capable of optically providing a rolled fingerprint image, these systems are less than wholly desirable. The mechanical aspects of these systems are relatively complicated. As a result, discontinuities, stray artifacts and other irregularities can appear in the composite image due to loss of focus or errors in merging the slices. The Fishbine et al. patent overcomes these problems but at the cost of requiring added computational power.

It is evident that there is a continuing need for improved optical fingerprinting systems. A system which can optically generate rolled fingerprint images in real time with limited computational requirements is desired. The system must of course be accurate and reliable.

SUMMARY OF THE INVENTION

The present invention is an improved method for generating data characteristic of a rolled skin pattern image, especially a fingerprint image. The image intensity summing properties of certain image recording media are used to build the rolled skin pattern image under controlled conditions. Images generated in accordance with this method will have image quality that is better and more reliable than the common ink method. The resulting system is simpler, less expensive and more reliable than competing optical or optical and mechanical devices. Generally, any skin print image such as those of the feet, hands, fingers, lips and the like can be recorded according to the invention. An especially preferred system is designed to record fingerprint images.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram representation of a system which can be used to generate rolled fingerprint images in accordance with the present invention.

FIGS. 2A-2C show several portions of a finger in contact with the prism shown in FIG. 1, as the finger is rolled across the prism during a fingerprint capture operation.

FIGS. 3A-3C illustrate an optical image of the fingerprint of the portions of the finger in contact with the prism in FIGS. 2A-2C, respectively.

FIGS. 4A-4C illustrate the rolled fingerprint image on the image recording medium as the optical images of FIGS. 3A-3C are recorded.

FIGS. 5 is a graphical representation of the image shown in FIGS. 4C after being digitized by the digitizer shown in FIG. 1.

FIG. 6 is a sequence of illustrations showing the finger being rolled across the prism.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following Detailed Description of the Preferred Embodiments, reference is made to the accompanying Drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. It is to be understood that the other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention.

Although the system of this invention can record the pattern of any skin surface, e.g., the foot, lips, hands or fingers, it is especially applicable to fingerprint images. Accordingly, the preferred embodiment focuses upon fingerprints but the principles, techniques and details apply to any skin print pattern.

A fingerprinting system 10 which can be used to optically produce rolled fingerprint images in accordance with the present invention is illustrated generally in FIG. 1. Fingerprinting system 10 is a microprocessor based system which includes processor 12 and associated random access memory (RAM) 14 and read only memory (ROM) 16. Image recorder 22, digitizer 24, video monitor 26, alarm 30, printer 28 and terminal 18 are interfaced to processor 12. Fingerprint images from the portions of a finger in contact with the receiving surface 34 as the finger is rolled across prism 20 are imaged by image recorder 22 and digitized by digitizer 24. An array of digital data representative of the fingerprint image is provided to processor 12. Image recorder 22 will include a lens, shutter mechanism, and recording medium (not separately shown) for controlled recording of fingerprint images. Terminal 18 will include a keyboard (not separately shown) which is used by an operator to interface with fingerprinting system 10. Rolled fingerprint images generated by system 10 can be displayed on video monitor 26, or printed onto a standard fingerprint card by printer 28. Alarm 30 is activated when a fingerprint is not properly captured, providing the operator with an indication that the capture procedure must be repeated. A system similar to this is disclosed in Fishbine et al. U.S. Pat. No. 4,933,976, which is hereby incorporated by reference.

Optical devices such as finger prism 20 are well known and disclosed, for example, in the McMahon U.S. Pat. No. 3,975,711 and the White U.S. Pat. No. 3,200,701. Finger prisms of this type are also disclosed in U.S. Pat. Nos. 4,792,226 and 4,811,414, which are assigned to the same assignee as the present invention. These devices utilize the optical principle of total internal reflection. When a finger is positioned on finger receiving surface 34 (a planar surface in the preferred embodiment but a curved surface could be used, mitigating the necessity of rolling the fingers), an optical image of the ridge and valley pattern on the surface of the finger (i.e., the fingerprint) is propagated from image propagation surface 32. Other means or optical devices which provide fingerprint images can also be used.

A person to be fingerprinted will position a first edge portion of their finger 36 on the receiving surface 34 of prism 20, and roll the finger to the opposite or second edge. In the example illustrated sequentially in FIG. 6, finger 36 is rolled in clockwise direction to the right from left edge L, through center portion C, to right edge R. (In this example, the images of the finger are presented as discrete samples. This is done for purposes of clarity in the explanation. In reality, light from the optical device will be projected continuously onto the image recording medium.) Portions L, C, and R of finger 36 are illustrated in contact with receiving surface 34, in FIGS. 2A-2C, respectively. Since the surface of finger 36 to be fingerprinted is curved, the area of contact between the finger and receiving surface 34, and therefore the fingerprint image of the portion of the finger in contact with the surface, will move with respect to prism 20 in the direction the finger is rotated. As finger 36 is rolled across prism 20 in the clockwise manner shown in FIGS. 2A-2C, the fingerprint images of finger portions L, C, and R will move from left to right across image propagation surface 32. Optical images OIL, OIC and OIR, which are propagated from image propagation surface 32 as portions L, C and R of finger 36 contact finger receiving surface 34, respectively, are illustrated in FIGS. 3A-3C.

Image recorder 22 is mounted with respect to prism 20 and configured in such a manner that its field of view encompasses the entire image propagation surface 32. Image recorder 22 continuously images fingerprint images such as OIL, OIC and OIR through its objective lens onto its image recording medium, resulting in an image representative of the accumulation of the light reflected from the parts of the finger in contact with the surface, illustrated in FIGS. 4A-4C. (Again, the recorded image is shown to grow in discrete steps. In reality, the recorded image will appear to grow from left to right as the finger rolls.) Digitizer 24 is connected to image recorder 22, and digitizes the resulting image.

In the preferred embodiment of system 10, image recorder 22 is made up of a standard 50 mm camera lens 44 and a commercially available, electronically shuttered, high-latency CCD array device 40 (such as Thomson Composants Militaires et Spatiaux of France component number TH 7866 Area Array CCD Sensor) adapted to integrate images over the desired period of time (typically 1-3 seconds). In the preferred embodiment, prism 20 has one side painted black (to present a black background) and a light source 42 is positioned such that parts of the finger in contact with receiving surface 34 appear as a source of light to the image recorder. The recorded image looks like the photographic negative of the rolled fingerprint image. Digitizer 24 is integrated into the CCD array device such that, on command from the processor 12, the image stored in the CCD array device is converted to a digital stream of data representing the rolled fingerprint image, sent to processor 12 and stored in RAM 14. A monochromatic light source 42 and filter 38 can be used to reduce the effects of stray photons on the rolled fingerprint image.

In a second embodiment of system 10, image recorder 22 is a video camera that continuously images fingerprint images such as OIL, OIC, and OIR through its objective lens, and generates frames of video signals representative thereof. Commercially available video cameras using conventional rasters and scanning rates can be used. In this embodiment, digitizer 24 is a frame grabber. The frame grabber implements in hardware a conventional "video keying" method. In the preferred embodiment described herein, digitizer 24 implements in hardware a circuit which performs a selective replacement of pixel values stored in RAM 14. Each pixel extracted from camera 22 has a unique corresponding value stored in RAM 14. Prior to the initiation of image capture from camera 22, all pixel values in RAM 14 are pre-set to a common intensity value which represents the blackest value. As each pixel value is extracted from camera 22 and digitized by digitizer 24, its digitized value is directly compared with the corresponding pixel value stored in RAM 14. If the digitized value is brighter, then it's value replaces the corresponding value in RAM 14. Otherwise its value is ignored. Where commercially available video cameras and video monitors are employed, this embodiment provides the additional advantage of permitting the operator of the equipment to view the roll of the fingerprint in real time.

Other image recording media 40, such as film, and other imaging systems, such as electrophotography, can be used. For purposes of example, if the recording media 40 is a light-sensitive light-emitting phosphor, exposure of the media results in a long persistence image of the rolled fingerprint. This long persistence provides the additional time to scan the corresponding fingerprint image. The scan, conducted by a single photodetector, or a vector of photodetectors, is thereby permitted additional time to digitize the corresponding image at any desired optical resolution.

In the preferred embodiment described herein, digitizer 24 is controlled by processor 12 such that the image stored in the CCD array is read to the processor 12. The digitizer produces two-dimensional arrays of digital pixel values PVn,m representative of the intensity of the rolled fingerprint image at corresponding discrete pixel locations PLn,m. In one embodiment digitizer 24 causes the image arrays to be formed of N=480 rows by M=640 columns of pixel values. For purposes of example, image arrays such as shown in FIG. 5 having 20 by 28 pixel values PVn,m are used throughout this description.

The pixel values PVn,m must have sufficient dynamic range to fully represent the rolled fingerprint image. In one embodiment, frame digitizer 24 includes an eight bit analog-to-digital converter which converts the video signals to eight bit pixel values PVn,m characteristic of rolled fingerprint image intensity. In this embodiment an eight bit pixel value PVn,m representative of a decimal zero (i.e., "00000000") is a minimum pixel value PVMIN and characterizes a lowest intensity or blackest pixel location PLn,m. A pixel value representative of a decimal two hundred and fifty-five (i.e. "11111111") is a maximum pixel value PVMAX and represents a highest intensity or whitest pixel location of PLn,m. A pixel value PVn,m representative of a decimal one hundred and twenty-eight (i.e. "10000000") represents a pixel location PLn,m having an intensity halfway between the lowest and highest intensities (i.e. grey).

For purposes of example, pixel values PVn,m are represented as being either white or black in the drawing figures accompanying this description. When finger 36 is not positioned on prism 20, pixel values PVn,m characteristic of the resulting background image will all be in the range of either PVMAX or PVMIN. When finger 36 is positioned on prism 20, ridges of the fingerprint will contact the prism, and pixel values PVn,m will be in the range of the other of PVMAX and PVMIN. In the embodiment of system 10 used for purposes of example throughout this description, lighter portions of optical images such as OIL characterize portions of finger 36 in contact with prism 20 (i.e. the ridges) and will be represented by pixel values PVn,m having magnitudes approaching PVMAX. The background and valleys of finger 36 in this embodiment are characterized by darker portions of images such as OIL, and are represented by pixel values PVn,m having magnitudes approaching PVMIN.

Processor 12 determines the presence or absence of an object on receiving surface 34. In one embodiment, processor 12 commands digitizer 24 to digitize the image from the image recording medium. The lack of significant change in pixel values is an indication that there is no object present. In other embodiments, a photodiode in the image recorder or a pressure switch on receiving surface 34 will notify processor 12 when an object makes contact with the receiving surface. The processor uses knowledge of the presence or absence of an object on the receiving surface to "timeout" and set alarm 30 if no object is present within a predetermined time after the start of the fingerprint "capture" and also to terminate the fingerprint capture process when the finger is removed. This "timeout" knowledge can also be used to reset the shutter state of the camera and thereby prevent overexposure of the recording media in the event of a long interval between the beginning of image recording and the onset of actual image.

When it is desired to capture a rolled fingerprint image, the operator will actuate a foot pedal (not shown) or a key on terminal 18 to place system 10 in a capture mode. Assuming left portion L of finger 36 is positioned on finger receiving surface 34 of prism 20 after the capture mode is entered, its optical image OIL will be propagated from the prism and recorded by image recorder 22. Then, as the finger rolls from left to right, the image recorder will continuously record the light propagating from the entire image propagation surface 32. After the completion of the finger roll, the finger is removed from the finger receiving surface. The removal of the finger, in turn, terminates the fingerprint capture process and the rolled fingerprint image is stored to RAM 14. The digitized array (shown in FIG. 5) will include pixel values PVn,m representative of a rolled fingerprint taken from finger 36. Before being displayed on video monitor 26 or onto an applicant card by printer 28, pixel values PVn,m can also be processed in accordance with methods described in the above referenced U.S. Pat. No. 4,811,414.

Although the present invention has been described with reference to the preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3947128 *Apr 19, 1974Mar 30, 1976Zvi WeinbergerPattern comparison
US4260979 *Dec 31, 1979Apr 7, 1981International Business Machines CorporationApparatus for sensing non-coded images
US4787742 *Jan 29, 1987Nov 29, 1988Fingermatrix, Inc.Direct finger reading
US4811414 *Feb 27, 1987Mar 7, 1989C.F.A. Technologies, Inc.Methods for digitally noise averaging and illumination equalizing fingerprint images
US4827527 *Aug 29, 1985May 2, 1989Nec CorporationPre-processing system for pre-processing an image signal succession prior to identification
US4933976 *Jan 25, 1988Jun 12, 1990C.F.A. Technologies, Inc.System for generating rolled fingerprint images
US4944021 *Oct 6, 1989Jul 24, 1990Nec CorporationIdentification system employing verification of fingerprints
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5548394 *Mar 16, 1995Aug 20, 1996Printrak International Inc.Scanning fingerprint reading
US5613012 *May 17, 1995Mar 18, 1997Smarttouch, Llc.Tokenless identification system for authorization of electronic transactions and electronic transmissions
US5625448 *May 8, 1995Apr 29, 1997Printrak International, Inc.Fingerprint imaging
US5737439 *Oct 29, 1996Apr 7, 1998Smarttouch, Llc.Anti-fraud biometric scanner that accurately detects blood flow
US5748766 *Apr 30, 1996May 5, 1998Identix IncorporatedMethod and device for reducing smear in a rolled fingerprint image
US5764789 *Sep 27, 1996Jun 9, 1998Smarttouch, LlcTokenless biometric ATM access system
US5793881 *Aug 31, 1995Aug 11, 1998Stiver; John A.Security device
US5802199 *Mar 17, 1997Sep 1, 1998Smarttouch, LlcUse sensitive identification system
US5805719 *Mar 18, 1997Sep 8, 1998SmarttouchFor rapid search of previously stored biometric samples
US5838812 *Jul 25, 1996Nov 17, 1998Smarttouch, LlcTokenless biometric transaction authorization system
US5870723 *Aug 29, 1996Feb 9, 1999Pare, Jr.; David FerrinTokenless biometric transaction authorization method and system
US6012039 *Feb 5, 1999Jan 4, 2000Smarttouch, Inc.Tokenless biometric electronic rewards system
US6038332 *Sep 5, 1997Mar 14, 2000Digital Biometrics, Inc.Method and apparatus for capturing the image of a palm
US6111977 *Apr 17, 1997Aug 29, 2000Cross Match Technologies, Inc.Hand-held fingerprint recognition and transmission device
US6154879 *Feb 5, 1999Nov 28, 2000Smarttouch, Inc.Tokenless biometric ATM access system
US6178255Apr 28, 1998Jan 23, 2001Cross Match Technologies, Inc.Individualized fingerprint scanner
US6182892 *Mar 25, 1998Feb 6, 2001Compaq Computer CorporationSmart card with fingerprint image pass-through
US6188781Jul 28, 1998Feb 13, 2001Digital Persona, Inc.Method and apparatus for illuminating a fingerprint through side illumination of a platen
US6225890Mar 20, 1998May 1, 2001Trimble Navigation LimitedVehicle use control
US6230148Jan 29, 1999May 8, 2001Veristar CorporationTokenless biometric electric check transaction
US6263090May 18, 1998Jul 17, 2001Cross Match Technologies, Inc.Code reader fingerprint scanner
US6269348Jan 29, 1999Jul 31, 2001Veristar CorporationTokenless biometric electronic debit and credit transactions
US6272562May 28, 1999Aug 7, 2001Cross Match Technologies, Inc.Access control unit interface
US6282303Jun 9, 2000Aug 28, 2001Digital Persona, Inc.Method and apparatus for scanning a fingerprint using a linear sensor within a cursor control device
US6324310Jun 2, 1998Nov 27, 2001Digital Persona, Inc.Method and apparatus for scanning a fingerprint using a linear sensor
US6330346Aug 10, 1998Dec 11, 2001Advanced Biometrics, Inc.Method and apparatus for subcutaneous identification
US6366682Oct 30, 1998Apr 2, 2002Indivos CorporationTokenless electronic transaction system
US6397198Jul 20, 1999May 28, 2002Indivos CorporationTokenless biometric electronic transactions using an audio signature to identify the transaction processor
US6483929Aug 18, 2000Nov 19, 2002Tarian LlcMethod and apparatus for histological and physiological biometric operation and authentication
US6581042May 3, 2001Jun 17, 2003Indivos CorporationTokenless biometric electronic check transactions
US6594376Apr 1, 2002Jul 15, 2003Indivos CorporationTokenless electronic transaction system
US6597802 *Aug 25, 1999Jul 22, 2003International Business Machines Corp.System and method for generating a rolled surface representation from a set of partial images
US6628813Jan 16, 2001Sep 30, 2003Cross Match Technologies, Inc.Individualized fingerprint scanner
US6662166Jun 11, 2001Dec 9, 2003Indivos CorporationTokenless biometric electronic debit and credit transactions
US6668071Jun 17, 1999Dec 23, 2003Viktor Albertovich MinkinMethod and apparatus for user identification using pulsating light source
US6675095Dec 15, 2001Jan 6, 2004Trimble Navigation, LtdOn-board apparatus for avoiding restricted air space in non-overriding mode
US6687391Dec 15, 1999Feb 3, 2004Cross Match Technologies, Inc.Adjustable, rotatable finger guide in a tenprint scanner with movable prism platen
US6724689Mar 8, 2002Apr 20, 2004Philip KoenigPersonal identification method and apparatus using acoustic resonance analysis of body parts
US6744910Oct 29, 1999Jun 1, 2004Cross Match Technologies, Inc.Hand-held fingerprint scanner with on-board image normalization data storage
US6795570 *Nov 5, 1999Sep 21, 2004Smiths Heimann Biometrics GmbhProcess and apparatus for the electronic recording of an image
US6809303Jan 17, 2002Oct 26, 2004Cross Match Technologies, Inc.Platen heaters for biometric image capturing devices
US6867850Apr 9, 2003Mar 15, 2005Cross Match Technologies, Inc.Light wedge for illuminating a platen in a print scanner
US6872916Sep 6, 2002Mar 29, 2005Cross Match Technologies, Inc.System and method for biometric image capturing
US6873713Mar 16, 2001Mar 29, 2005Kabushiki Kaisha ToshibaImage processing apparatus and method for extracting feature of object
US6879966Mar 22, 2001Apr 12, 2005Indivos CorporationTokenless biometric electronic financial transactions via a third party identicator
US6886104Jun 23, 2000Apr 26, 2005Cross Match TechnologiesRechargeable mobile hand-held fingerprint scanner with a data and power communication interface
US6920435Apr 10, 2002Jul 19, 2005Indivos CorporationTokenless biometric electronic transactions using an audio signature to identify the transaction processor
US6928195Dec 18, 2001Aug 9, 2005Cross Match Technologies, Inc.Palm scanner using a programmable nutating mirror for increased resolution
US6944768Apr 19, 2002Sep 13, 2005Cross Match Technologies, Inc.System and methods for access control utilizing two factors to control access
US6950810Dec 6, 2000Sep 27, 2005Indivos CorporationTokenless biometric electronic financial transactions via a third party identicator
US6954260Jan 17, 2002Oct 11, 2005Cross Match Technologies, Inc.Systems and methods for illuminating a platen in a print scanner
US6980670Feb 26, 2001Dec 27, 2005Indivos CorporationBiometric tokenless electronic rewards system and method
US6983062Mar 30, 2001Jan 3, 2006Cross Match Technologies, Inc.Fingerprint scanner auto-capture system and method
US6985608Jul 14, 2003Jan 10, 2006Indivos CorporationTokenless electronic transaction system
US6996259Aug 1, 2003Feb 7, 2006Cross Match Technologies, Inc.System and method for counting ridges in a captured print image
US7010148Oct 23, 2003Mar 7, 2006Cross Match Technologies, Inc.Calibration and correction in a fingerprint scanner
US7035441 *Apr 27, 2001Apr 25, 2006Precise Biometrics AbCheck for fingerprints
US7068822Dec 18, 2002Jun 27, 2006Cross Match Technologies, Inc.System and method for sending a packet with position address and line scan data over an interface cable
US7073711Apr 21, 2003Jul 11, 2006Cross Match Technologies, Inc.Mobile handheld code reader and print scanner system and method
US7079007Apr 19, 2002Jul 18, 2006Cross Match Technologies, Inc.Systems and methods utilizing biometric data
US7095880Sep 20, 2002Aug 22, 2006Cross Match Technologies, Inc.Method and apparatus for rolled fingerprint capture
US7103201Sep 3, 2003Sep 5, 2006Cross Match Technologies, Inc.Methods for capturing fingerprint images using a moving platen
US7133792Mar 23, 2001Nov 7, 2006Ensign Holdings, LlcMethod and apparatus for calibration over time of histological and physiological biometric markers for authentication
US7148878Dec 10, 2001Dec 12, 2006Motorola, Inc.Method and apparatus for biometric control of display indicator
US7152045 *Sep 10, 2002Dec 19, 2006Indivos CorporationTokenless identification system for authorization of electronic transactions and electronic transmissions
US7162060Oct 25, 1999Jan 9, 2007Cross Match TechnologiesMethod, system, and computer program product for control of platen movement during a live scan
US7164440Feb 28, 2003Jan 16, 2007Cross Match Technologies, Inc.Dynamic image adaptation method for adjusting the quality of digital prints
US7203344Jan 16, 2003Apr 10, 2007Cross Match Technologies, Inc.Biometric imaging system and method
US7203347 *May 28, 2002Apr 10, 2007Activcard Ireland LimitedMethod and system for extracting an area of interest from within a swipe image of a biological surface
US7248719Oct 7, 2005Jul 24, 2007Indivos CorporationTokenless electronic transaction system
US7271881Oct 7, 2005Sep 18, 2007Cross Match Technologies, Inc.Systems and methods for illuminating a platen in a print scanner
US7277562Aug 1, 2003Oct 2, 2007Cross Match Technologies, Inc.Biometric imaging capture system and method
US7308122Jan 16, 2003Dec 11, 2007Cross Match Technologies, Inc.Biometric imaging system and method
US7319565Feb 17, 2006Jan 15, 2008Cross Match Technologies, Inc.Silicone rubber surfaces for biometric print TIR prisms
US7441123Mar 23, 2001Oct 21, 2008Ensign HoldingsMethod and apparatus for characterizing and estimating the parameters of histological and physiological biometric markers for authentication
US7502497Mar 12, 2007Mar 10, 2009Activcard Ireland Ltd.Method and system for extracting an area of interest from within an image of a biological surface
US7536352Apr 18, 2005May 19, 2009Yt Acquisition CorporationTokenless biometric electronic financial transactions via a third party identicator
US7536557Mar 22, 2001May 19, 2009Ensign HoldingsMethod for biometric authentication through layering biometric traits
US7558407Jun 14, 2007Jul 7, 2009Yt Acquisition CorporationTokenless electronic transaction system
US7565329May 30, 2001Jul 21, 2009Yt Acquisition CorporationBiometric financial transaction system and method
US7586591Oct 27, 2004Sep 8, 2009Cross Match Technologies, Inc.Light wedge for illuminating a platen in a print scanner
US7606401Aug 4, 2005Oct 20, 2009Yt Acquisition CorporationSystem and method for processing tokenless biometric electronic transmissions using an electronic rule module clearinghouse
US7613334 *Dec 7, 2004Nov 3, 2009Cross Match Technologies GmbhMethod and arrangement for electronic recording of rolled fingerprints
US7613659Sep 16, 1999Nov 3, 2009Yt Acquisition CorporationSystem and method for processing tokenless biometric electronic transmissions using an electronic rule module clearinghouse
US7620605Jan 31, 2005Nov 17, 2009Yt Acquisition CorporationSystem and method for processing tokenless biometric electronic transmissions using an electronic rule module clearinghouse
US7631193Jan 23, 2002Dec 8, 2009Yt Acquisition CorporationTokenless identification system for authorization of electronic transactions and electronic transmissions
US7657067Dec 29, 2005Feb 2, 2010Cross Match Technologies, Inc.Fingerprint scanner auto-capture system and method
US7660447 *Jan 23, 2006Feb 9, 2010Fujitsu LimitedDetection of fingerprint distortion by deformation of elastic film or displacement of transparent board
US7698567Dec 28, 2005Apr 13, 2010Yt Acquisition CorporationSystem and method for tokenless biometric electronic scrip
US7719566 *Jan 9, 2002May 18, 2010Sagem SecuriteOptical identification device
US7779457Jun 9, 2005Aug 17, 2010Identifid, IncIdentity verification system
US7796013Jan 10, 2001Sep 14, 2010Ensign HoldingsDevice using histological and physiological biometric marker for authentication and activation
US7859519May 1, 2000Dec 28, 2010Tulbert David JHuman-machine interface
US7882032Aug 17, 2000Feb 1, 2011Open Invention Network, LlcSystem and method for tokenless biometric authorization of electronic communications
US7948361Nov 19, 2002May 24, 2011Ensign HoldingsObtaining biometric identification using a direct electrical contact
US7970678Apr 14, 2009Jun 28, 2011Lapsley Philip DBiometric financial transaction system and method
US8036431 *Oct 27, 2000Oct 11, 2011Identix IncorporatedPortable apparatus for identification verification
US8049597Sep 21, 2009Nov 1, 2011Ensign Holdings, LlcSystems and methods for securely monitoring an individual
US8073209Apr 12, 2005Dec 6, 2011Cross Match Technologies, IncBiometric imaging system and method
US8150108Mar 17, 2008Apr 3, 2012Ensign Holdings, LlcSystems and methods of identification based on biometric parameters
US8260716Dec 28, 2005Sep 4, 2012Open Invention Network, LlcSystem and method for processing tokenless biometric electronic transmissions using an electronic rule module clearinghouse
US8452680Oct 28, 2011May 28, 2013Open Invention Network, LlcBiometric financial transaction system and method
US8630932Aug 16, 2012Jan 14, 2014Open Invention Network, LlcBiometric financial transaction system and method
US8630933Apr 10, 2013Jan 14, 2014Open Invention Network, LlcBiometric financial transaction system and method
DE10358738B3 *Dec 11, 2003Jun 2, 2005Smiths Heimann Biometrics GmbhVerfahren und Anordnung zur elektronischen Aufnahme abgerollter Fingerabdrücke
DE19851544C1 *Nov 9, 1998May 31, 2000Heimann Biometric Systems GmbhErzeugen eines abgerollten Fingerabdruckbildes aus einer Serie von Einzelbildern
EP1134691A2 *Mar 2, 2001Sep 19, 2001Kabushiki Kaisha ToshibaImage processing apparatus and method for extracting feature of object
EP1166223A1 *Sep 27, 1999Jan 2, 2002Digital Persona, Inc.Fingerprint detection apparatus
WO1997041528A1 *Apr 30, 1997Nov 6, 1997Identix IncMethod and device for reducing smear in a rolled fingerprint image
WO1997047235A1Jun 10, 1997Dec 18, 1997J M I LtdDermal diagnostic analysis system and method
Classifications
U.S. Classification382/127, 356/71
International ClassificationA61B5/117, G06K9/00, G06T1/00
Cooperative ClassificationG06K9/00026, A61B5/1172
European ClassificationG06K9/00A1C, A61B5/117B
Legal Events
DateCodeEventDescription
Nov 7, 2006ASAssignment
Owner name: BANK OF AMERICA, N.A., ILLINOIS
Free format text: SECURITY AGREEMENT;ASSIGNORS:L-1 IDENTITY SOLUTIONS, INC.;IMAGING AUTOMATION, INC.;TRANS DIGITAL TECHNOLOGIES CORPORATION;AND OTHERS;REEL/FRAME:018679/0105
Effective date: 20061019
Sep 25, 2001FPExpired due to failure to pay maintenance fee
Effective date: 20010720
Jul 22, 2001LAPSLapse for failure to pay maintenance fees
Feb 13, 2001REMIMaintenance fee reminder mailed
Jan 17, 1997FPAYFee payment
Year of fee payment: 4
May 7, 1996RFReissue application filed
Effective date: 19950911
Feb 8, 1994RFReissue application filed
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Nov 19, 1990ASAssignment
Owner name: DIGITAL BIOMETRICS, INC., 5600 ROWLAND RD., SUITE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:FISHBINE, BRIAN H.;FISHBINE, GLENN M.;KLEIN, THEODORE D.;AND OTHERS;REEL/FRAME:005560/0298;SIGNING DATES FROM 19901108 TO 19901113